Home / 640,594.09-883,985.15-354,095.72

Finding the Fourth Proportional to 640,594.09, 883,985.15 and 354,095.72

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Solution

The fourth proportional to 640,594.09, 883,985.15 and 354,095.72 is: 488,632.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,594.09 : 883,985.15 = 354,095.72 : x
  2. Step 2: Convert to fraction form
    640,594.09/883,985.15 = 354,095.72/x
  3. Step 3: Cross multiply
    640,594.09x = 883,985.15 × 354,095.72
  4. Step 4: Simplify right side
    640,594.09x = 313,015,355,947.03
  5. Step 5: Solve for x
    x = 313,015,355,947.03/640,594.09
  6. Step 6: Final answer
    x = 488,632.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.